What is WiFi site survey?
A WiFi site survey measures or models how radio signals behave in a particular building. The result shows where access points should go, how strong the signal is across the floor plan, and where interference or dead spots are likely to cause trouble.
Surveys come in several types. A predictive survey is a software model built from a floor plan before anything is installed. A validation survey measures a finished network against its design or requirements. Passive surveys listen to the signals present, and active surveys also join the network to test connection and throughput. Terms and boundaries are used a little differently by different providers.
A survey is different from a speed test or a single walkthrough with a phone. It follows a method, covers the whole area, and produces documented results that can be compared over time.
How it shows up in practice
- Agree the requirements first: device types, applications, user density and the coverage level needed in each area.
- Provide up to date floor plans, and state any areas with special construction, such as thick walls or large metal shelving.
- Ask what you will receive, for example heat maps, access point placement, channel and power plans, and a written summary.
- Plan access for the on-site work, since a survey often needs time in every room, including secured areas.